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Hydraulic shaping device of stainless steel lined compound pipe and its shaping method

A hydroforming, stainless steel technology, applied in the field of industrial and civil composite pipe processing, can solve the problems of difficult sealing of welded seam stainless steel inner pipe, large device, complicated structure of oil cylinder and support, and eliminates the need for coordinated control system, operation The effect of convenience and easy manufacturing quality assurance

Inactive Publication Date: 2005-08-10
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil cylinder and bracket structure of this system is complicated, the device is huge, and it is difficult to effectively seal the welded seamed stainless steel inner tube

Method used

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  • Hydraulic shaping device of stainless steel lined compound pipe and its shaping method
  • Hydraulic shaping device of stainless steel lined compound pipe and its shaping method

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Embodiment Construction

[0024] Further illustrate the present invention below in conjunction with accompanying drawing.

[0025] see figure 2 , the stainless steel lined composite tube hydroforming device of the present invention comprises a core rod 1, the two ends of the core rod 1 are respectively fixedly connected with a left expander 2 and a right expander 3, and the outer diameter of the core rod 1 is smaller than the stainless steel inner tube to be composited 8, self-tightening sealing rings 4 are respectively provided on the left and right expansion heads, and fixing devices 5 are provided at the ends of the expansion heads, and self-tightening sealing rings 4 on both sides, the outer diameter of the core rod 1 and the inner diameter of the stainless steel inner tube 8 are formed Sealed expansion cavity 6, the two sides of each self-tightening sealing ring 4 are respectively tightly attached to the fixing device 5 and the corresponding expansion head, and a sealing ring 7 is arranged betwee...

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Abstract

A hydraulic apparatus for forming a composite pipe with stainless steel liner is composed of core rod, left and right expanding ehads fixed respectively to both ends of said core rod, two self-fastened sealing rings for left and right expanding heads, and the fixers at the ends of said expanding heads. Its forming technology is also disclosed.

Description

technical field [0001] The invention relates to the technical field of processing industrial and civil composite pipes, and relates to a processing technology for fluid conveying lining pipes, in particular to a stainless steel-lined composite pipe hydroforming device and a hydroforming method thereof. Background technique [0002] The stainless steel lined composite pipe is made of two metal materials, stainless steel (inner layer) and carbon steel (outer layer), so it has the characteristics of the two materials, and can adapt to strong corrosion, wear and pressure during the process of conveying fluid. The environment with high temperature is widely used in industrial sectors such as petroleum, chemical industry, nuclear power, light industry and mechanical engineering. Compared with single-material metal pipes, it can save materials and reduce costs. [0003] The principle of hydroforming to produce composite pipes is: put the two pipes together, pressurize the inner pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/033
Inventor 王学生徐宏李培宁黄志荣侯峰惠虎谭晓勇
Owner EAST CHINA UNIV OF SCI & TECH
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